Sweet Potato English Ale

Since I read a recipe that included it, I've wanted to brew something with sweet potatoes. I finally got around to it. I brewed a 2.75 gallon batch as I wasn't sure how it would turn out, also I've decided to start brewing smaller batches. I based the recipe off a english nut brown ale. This ended up coming out with a lot higher gravity than I expected, but since it was planned as a fall beer it should have time to mellow.
I diced the sweet potatoes into finger nail sized pieces and then roasted half in the oven for about 45 minutes at 450 degrees. Some ended up burning on the outside but that should just add to the flavor. I then mashed all the potatoes for about an hour at 155 degrees (At least as close to that temperature as I could maintain. I wish I had a gas stove.) I then separated the the potatoes and proceeded to boil the wort as normal. Hopefully the orange color comes through in the end. I am excited to taste the final product.

Sweet Potato Ale

Specifics 
Batch Size: 2.75 gallons
Anticipated SRM: 7.0
Anticipated IBU: 15
Wort Boil Time: 60
Original Gravity:  1.072

Grain
.5oz Biscuit Malt
.5oz Chocolate
.5oz Special B Malt
.5oz Special Roast
1.25oz Dark Brown Sugar
1oz Flaked Oats
1oz Sucrose
1oz Torrified Wheat
3lbs of Golden Light DME

Hops
.25oz Cluster (7.50%) @ 60 min
.25oz Willamette (5.50%) @ 20 min

Yeast
WLP013 London Ale Yeast